黑板擦;板擦儿;
Study on the control system of intelligent blackboard eraser
智能黑板擦控制系统研究
Trying to fix the tie, he took a blackboard eraser and hammered a large tack1 through his tie into his chest.
为了固定领带,他拿起黑板擦,透过领带,把一个大头钉砸入胸膛。
Brush glass with clean blackboard eraser, already clean and bright quick save effort.
用干净黑板擦擦玻璃, 既干净明亮又快速省力.
Have you seen the chalk and blackboard eraser?
你们知道粉笔和黑板擦放在哪里 吗 ?
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